JPH01216004A - Supporting device for steam turbine diaphragm - Google Patents
Supporting device for steam turbine diaphragmInfo
- Publication number
- JPH01216004A JPH01216004A JP3944388A JP3944388A JPH01216004A JP H01216004 A JPH01216004 A JP H01216004A JP 3944388 A JP3944388 A JP 3944388A JP 3944388 A JP3944388 A JP 3944388A JP H01216004 A JPH01216004 A JP H01216004A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- lower half
- supporting
- steam turbine
- center pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 description 2
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、蒸気タービンダイヤフラムのサポート装置に
係り、特に、ダイヤフラムの左右方向軸芯を保持するセ
ンタピンの応力を軽減し、ダイヤフラムのセンタピン溝
の損傷を防止するダイヤフラムのサポート装置に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a support device for a steam turbine diaphragm, and in particular, to reduce stress on a center pin that holds the diaphragm's left-right axis, and to reduce the stress on the center pin groove of the diaphragm. This invention relates to a diaphragm support device that prevents damage.
第４図に示す従来のサポート装置は、実公昭６１−３７
７６４号公報に記載のように、下半ダイヤフラム２の水
平面近傍に設けられたサポートバー溝３に、ダイヤフラ
ム外径より大きく突出した厚さをもつサポートバー４が
ボルト５によって固定され、下半車室６に設けられたサ
ポートバー溝７底にセットされる。サポートバーと車室
に設けられたサポートバー溝底との間には、シム８が取
付けられ、このシムの厚さを調整することによって、ダ
イヤフラムのロータ１（第１図）に対する上・下方向軸
芯位置が調整される。しかし、サポートバー背面と車室
に設けられたサポートバー溝背面との間には大きな隙間
１２があるため、ダイヤフラムがタービンの運転中の振
動、又は、蒸気力によって、ダイヤフラム外径と車室内
径との間に設けられた２〜３ｍの隙間１４の範囲で移動
することを妨げてはいない。The conventional support device shown in Fig. 4 is
As described in Japanese Patent No. 764, a support bar 4 having a thickness larger than the outer diameter of the diaphragm is fixed to a support bar groove 3 provided near the horizontal surface of the lower half diaphragm 2 with a bolt 5, and the lower half diaphragm 2 is fixed with a bolt 5. The support bar is set at the bottom of a groove 7 provided in the chamber 6. A shim 8 is installed between the support bar and the bottom of the support bar groove provided in the vehicle compartment, and by adjusting the thickness of this shim, the diaphragm can be adjusted in the upward and downward directions with respect to the rotor 1 (Fig. 1). The axis position is adjusted. However, since there is a large gap 12 between the back of the support bar and the back of the support bar groove provided in the vehicle compartment, the diaphragm may be damaged by vibrations during turbine operation or by steam force, causing the outer diameter of the diaphragm to change from the diameter of the vehicle interior. This does not prevent movement within the 2-3 m gap 14 provided between the two.
一方、公技８５−１６１５８に記載され、第５図に示す
ように、下半車室６垂直線上に設けられたセンタサポー
ト装置は、下半車室に埋込まれたセンタピン１６と、下
半ダイヤフラム２に設けられたセンタピン溝１７とが相
互に嵌込まれており、下半ダイヤフラム２のロータ１に
対する左・右方向軸芯を保持する役目をもつ、この構造
ではダイヤフラムが蒸気力によって浮上するのを妨げて
はいない。 すなわち、前者はダイヤフラムのロータに
対する軸芯のうち、上・下方向を、後者は左右方向を保
持するための装置であり、それぞれ独立した装置である
。On the other hand, as described in Japanese Publication No. 85-16158 and shown in FIG. The center pin groove 17 provided in the diaphragm 2 is fitted into each other, and has the role of maintaining the left and right axis of the lower half diaphragm 2 with respect to the rotor 1. In this structure, the diaphragm floats due to steam force. It doesn't prevent it. That is, the former is a device for holding the diaphragm in the upper and lower directions of the axis relative to the rotor, and the latter is a device for holding the left and right directions, and each is an independent device.
上記従来技術では、ダイヤフラムΦロータに対する軸芯
調整を、上・下方向の保持装置と左・右方向の保持装置
とに独立して設けていたため、特に、左・右方向軸芯を
保持するセンタサポート装置では、センタピンとセンタ
ピン溝との間に、組立１分解作業の必要上０．０２〜０
．０７ｍｍの隙間を設けているため、タービン運転中の
微振動によって、センタピンとセンタピン溝とが繰返し
ぶつかりあい、ついには、センタピン溝が摩耗するとい
う不具合が生じている。In the above conventional technology, the axis adjustment for the diaphragm Φ rotor was provided independently for the upper and lower holding devices and the left and right holding devices. In the support device, there is a gap of 0.02 to 0 between the center pin and the center pin groove due to the necessity of assembly and disassembly work.
．． Since a gap of 0.7 mm is provided, the center pin and the center pin groove repeatedly collide with each other due to minute vibrations during turbine operation, which causes the problem that the center pin groove eventually wears out.
この不具合の対応策として、センタピン径の大径化、又
は、センタピンとセンタピン溝との嵌合深さの増加等に
より、センタピン溝に加わる面圧”の低下策を実施して
来たが、既作製品は、構遭的制約上、対応の困難なもの
もあり完全な対策をとり得ない問題もあった。As a countermeasure to this problem, measures have been taken to reduce the surface pressure applied to the center pin groove by increasing the diameter of the center pin or increasing the depth of engagement between the center pin and the center pin groove. Due to structural constraints, some of the products were difficult to deal with, and there were also problems for which complete countermeasures could not be taken.
本発明の目的は、センタピン溝の摩耗を防止し、タービ
ンの安全性を向上させるサポート装置を提供することに
ある。An object of the present invention is to provide a support device that prevents wear of a center pin groove and improves turbine safety.
上記目的は、サポートバー背面と車室に設けられたサポ
ートバー溝背面との間の隙間に、厚さを調整されたスペ
ーサを嵌合し、実質的な隙間を無くすことによって達成
される。The above object is achieved by fitting a spacer with an adjusted thickness into the gap between the back surface of the support bar and the back surface of the support bar groove provided in the vehicle compartment, thereby substantially eliminating the gap.
サポートバー背面と車室に設けられたサポートバー溝背
面との間の隙間にスペーサを嵌合し、ダイヤフラムと車
室との間の間隙を無くすことによって、サポート装置の
従来の機能である上・下方向軸芯調整に加え、ダイヤプ
ラムが車室内で、左・右方向に動くのを拘束することが
できる。この場合、左右のスペーサの厚さを調整するこ
とによって、左・右方向軸芯の調整も可能である。従っ
て、ダイヤフラムがタービンの運転中の振動や蒸気力に
よって左・右に動こうとする力を、センタピンだけで支
えていた従来の技術に加え、サポート装置でも分担する
ことができるため、センタピン応力を軽減でき、センタ
ピン溝の摩耗を防ぐことができる。By fitting a spacer into the gap between the back of the support bar and the back of the support bar groove provided in the passenger compartment, and eliminating the gap between the diaphragm and the passenger compartment, the conventional function of the support device is improved. In addition to adjusting the downward axis, it is possible to restrain the diaphragm from moving to the left or right inside the vehicle interior. In this case, by adjusting the thickness of the left and right spacers, it is also possible to adjust the axes in the left and right directions. Therefore, in addition to the conventional technology where the diaphragm tries to move left and right due to vibrations and steam force during turbine operation, which is supported only by the center pin, the support device can also share the force, which reduces center pin stress. This can reduce wear on the center pin groove.
以下、本発明の一実施例を第１図ないし第３図を用いて
説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
第１図はダイヤフラムを車室にセットするためのサポー
ト装置の全体図であり、第２図はサポート装置の詳細図
である。FIG. 1 is an overall view of a support device for setting a diaphragm in a vehicle compartment, and FIG. 2 is a detailed view of the support device.
下半ダイヤフラム２の水平面近傍に設けられたサポート
バー溝３に、ダイヤフラム外径より突出した状態にサポ
ートバー４が、ボルト５によって。A support bar 4 is attached to a support bar groove 3 provided near the horizontal surface of the lower half diaphragm 2 by bolts 5 so as to protrude from the outer diameter of the diaphragm.
固定され、下半車室６に設けられたサポートバー溝７の
底部に取付けたシム８の上に、サポートパー４の突出し
部９をセットすることによって、下半ダイヤフラム２が
下半車室６にセットされる。By setting the protruding part 9 of the support bar 4 on the shim 8 which is fixed and attached to the bottom of the support bar groove 7 provided in the lower half compartment 6, the lower half diaphragm 2 is fixed to the lower half compartment 6. is set to
サポートバー背面１０と下半車室に設けられたサポート
バー溝背面１１との隙間１２にはスペーサ１３が嵌合さ
れ、下半ダイヤフラム２が、下半車室６との隙間１４の
範囲で移動することを防いでいる。A spacer 13 is fitted into a gap 12 between the support bar rear surface 10 and a support bar groove rear surface 11 provided in the lower half compartment, and the lower half diaphragm 2 is moved within the range of the gap 14 between the lower half compartment 6 and the lower half compartment 6. prevents you from doing so.
本発明によれば、タービンの運転中に振動や蒸気力によ
って、下半ダイヤプラムを一方向に押付ける作用力が発
生しても、センタピン１６とセンタピン溝１７との嵌合
による支持に加え、サポートバ一部でも、この作用力を
支持することが出来るため、作用力に対抗する部分の接
触面積を大巾に増加させることとなり１作用力に対する
面圧が低減されるため、従来技術の問題点であったセン
タピン溝の摩耗を防止することができる。According to the present invention, even if an acting force that presses the lower half diaphragm in one direction is generated due to vibration or steam force during operation of the turbine, in addition to being supported by the fitting between the center pin 16 and the center pin groove 17, Since even a part of the support bar can support this acting force, the contact area of the part that opposes the acting force is greatly increased, and the surface pressure for one acting force is reduced, which solves the problems of the conventional technology. It is possible to prevent the center pin groove from being worn out.
第３図は、第２図に示すスペーサ１３に替え、弓状のバ
ネ１５を挿入した状態を示す。FIG. 3 shows a state in which an arcuate spring 15 is inserted in place of the spacer 13 shown in FIG.
本発明は、特に、温度の高い部位に適した構造である。The present invention has a structure particularly suitable for areas with high temperatures.
すなわち、蒸気温度によって下半ダイヤフラムが膨張し
た場合にも、バネ１５のたわみによって下半車室と下半
ダイヤフラムの突張り合いを吸収し、お互いが損傷する
ことを防ぐ。That is, even when the lower half diaphragm expands due to steam temperature, the deflection of the spring 15 absorbs the tension between the lower half casing and the lower half diaphragm, thereby preventing damage to each other.
本発明によれば、従来、センタビンによってのみ保持し
ていた場合に比べ、センタピン溝の作用力を軽減し、セ
ンタピン溝の損傷を防ぐことができ、タービンの安全性
の向上に効果がある。According to the present invention, compared to the case where the center pin groove is conventionally held only by the center pin, the acting force on the center pin groove can be reduced and damage to the center pin groove can be prevented, which is effective in improving the safety of the turbine.
第１図は本発明の一実施例のサポート装置の全体図、第
２図は第１図サポート装置の断面図、第３図は第２図の
応用例の断面図、第４図はサポート装置の従来技術の断
面図、第５図はセンタサポート装置の詳細図である。
１・・・ロータ、２・・・下半ダイヤフラム、４・・・
サポートバー、６・・・下半車室、１２・・・隙間、１
３・・・スペーサ、１４・・・隙間、１５・・・バネ。
第１図
第２図
第３図FIG. 1 is an overall view of a support device according to an embodiment of the present invention, FIG. 2 is a sectional view of the support device shown in FIG. 1, FIG. 3 is a sectional view of an application example of FIG. FIG. 5 is a detailed view of the center support device. 1...Rotor, 2...Lower half diaphragm, 4...
Support bar, 6...lower compartment, 12...gap, 1
3...Spacer, 14...Gap, 15...Spring. Figure 1 Figure 2 Figure 3
Claims (1)
センタサポート装置をもつ下半ダイヤフラムに取付けら
れた一対のダイヤフラムのサポート装置において、 サポートバーの背面と、相対する車室のサポート溝背面
との隙間にスペーサを挿入して埋め、前記ダイヤフラム
が前記車室の中で左・右に移動することを防ぐことを特
徴とする蒸気タービンダイヤフラムのサポート装置。 ２、特許請求の範囲第１項に於いて、 前記スペーサを弓状のバネとしたことを特徴とする蒸気
タービンダイヤフラムのサポート装置。[Scope of Claims] 1. In a pair of diaphragm support devices attached to a lower half diaphragm having a center support device for a steam turbine diaphragm divided into upper and lower halves, the back surface of the support bar and the opposing casing A support device for a steam turbine diaphragm, characterized in that a spacer is inserted and filled in a gap between the support groove and the back surface of the diaphragm to prevent the diaphragm from moving leftward or rightward in the casing. 2. A steam turbine diaphragm support device according to claim 1, wherein the spacer is an arcuate spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3944388A JPH01216004A (en) | 1988-02-24 | 1988-02-24 | Supporting device for steam turbine diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3944388A JPH01216004A (en) | 1988-02-24 | 1988-02-24 | Supporting device for steam turbine diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01216004A true JPH01216004A (en) | 1989-08-30 |
Family
ID=12553161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3944388A Pending JPH01216004A (en) | 1988-02-24 | 1988-02-24 | Supporting device for steam turbine diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01216004A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286195A (en) * | 2007-05-15 | 2008-11-27 | General Electric Co <Ge> | Supporting bar having adjustable shim design for turbine diaphragm |
| JP2011106452A (en) * | 2009-11-13 | 2011-06-02 | General Electric Co <Ge> | Support bar for turbine diaphragm that facilitates reduced maintenance cycle time and cost |
| JP2016188620A (en) * | 2015-03-30 | 2016-11-04 | 三菱日立パワーシステムズ株式会社 | Support device, turbine, assembly method of rotary machine, and disassembly method of the rotary machine |
-
1988
- 1988-02-24 JP JP3944388A patent/JPH01216004A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286195A (en) * | 2007-05-15 | 2008-11-27 | General Electric Co <Ge> | Supporting bar having adjustable shim design for turbine diaphragm |
| US7887291B2 (en) * | 2007-05-15 | 2011-02-15 | General Electric Company | Support bar with adjustable shim design for turbine diaphragms |
| RU2468211C2 (en) * | 2007-05-15 | 2012-11-27 | Дженерал Электрик Компани | Support plank with adjustable gasket for turbine diaphragms |
| DE102008002852B4 (en) | 2007-05-15 | 2022-06-09 | General Electric Co. | Support rail with adjustable disc arrangement for turbine cover discs |
| JP2011106452A (en) * | 2009-11-13 | 2011-06-02 | General Electric Co <Ge> | Support bar for turbine diaphragm that facilitates reduced maintenance cycle time and cost |
| JP2016188620A (en) * | 2015-03-30 | 2016-11-04 | 三菱日立パワーシステムズ株式会社 | Support device, turbine, assembly method of rotary machine, and disassembly method of the rotary machine |
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